Chi-Squared or Crosstabs
POLS 3316: Statistics for Political Scientists
2023-11-06
Frequency distribution
Used in hypothesis testing
Categorical variables
Ideal sample size 50- 1000
+ Less than 10 very unreliableTwo hypothesis tests
- Test of goodness of fit (1 variable)
- **Test of independence (2 variables)*Categorical variables
+ Testing if categories are related
+ Men/women, Republicans/Democracts, Northerners/Southerners, Black/White2nd variable is the thing we look for a difference in
+ Pay, attitudes toward taxes, attitudes toward military service, victimization by policeVisualization of Chi-Square
Chi Square Distribution
POLS3316, Fall 2023, Instructor: Tom Hanna